Fuel Pressure Regulator A Control Circuit/Open
Open circuit at fuel pressure regulator A. The actuator that controls rail pressure cannot be driven.
Affected components
- Fuel pressure regulator
- Regulator wiring
Common causes
- High likelihood: Wiring break or unplugged connector
- Medium likelihood: Regulator solenoid open
- Low likelihood: Pin pushed back out of connector body
Possible symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.